CVE-2026-26154
Published: Apr 14, 2026
Modified: Jun 1, 2026
CVSS v3.1
7.5
Description
Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.
| Vendor | Product | Versions |
|---|---|---|
Microsoft | Windows Server 2012 | affected 6.2.9200.0 - < 6.2.9200.26026 |
Microsoft | Windows Server 2012 (Server Core installation) | affected 6.2.9200.0 - < 6.2.9200.26026 |
Microsoft | Windows Server 2012 R2 | affected 6.3.9600.0 - < 6.3.9600.23132 |
Microsoft | Windows Server 2012 R2 (Server Core installation) | affected 6.3.9600.0 - < 6.3.9600.23132 |
Microsoft | Windows Server 2016 | affected 10.0.14393.0 - < 10.0.14393.9060 |
Microsoft | Windows Server 2016 (Server Core installation) | affected 10.0.14393.0 - < 10.0.14393.9060 |
Microsoft | Windows Server 2019 | affected 10.0.17763.0 - < 10.0.17763.8644 |
Microsoft | Windows Server 2019 (Server Core installation) | affected 10.0.17763.0 - < 10.0.17763.8644 |
Microsoft | Windows Server 2022 | affected 10.0.20348.0 - < 10.0.20348.5020 |
Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | affected 10.0.25398.0 - < 10.0.25398.2274 |
Microsoft | Windows Server 2025 | affected 10.0.26100.0 - < 10.0.26100.32690 |
Microsoft | Windows Server 2025 (Server Core installation) | affected 10.0.26100.0 - < 10.0.26100.32690 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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